Sum of all subsets of a set formed by first n natural numbers | C # program to find sum of all subsets of a set . ; sum of subsets is ( n * ( n + 1 ) / 2 ) * pow ( 2 , n - 1 ) ; Driver code
using System ; class GFG { static long findSumSubsets ( int n ) { return ( n * ( n + 1 ) / 2 ) * ( 1 << ( n - 1 ) ) ; } public static void Main ( ) { int n = 3 ; Console . WriteLine ( findSumSubsets ( n ) ) ; } }